Ventilator



A. A. LIPTON Jan. 23, 1968 VENTILATOR d 7 m 3 i United States Patent Office 3,364,340 Patented Jan. 23, 1968 3,364,840 VENTILATOR Abraham Allen Lipton, Rock Ridge, Mamaroneck, N.Y. 10543 Filed Apr. 1, 1966, Ser. No. 539,415 3 Claims. (CI. 98-64) ABSTRACT THE DISCLOSURE A tubular type Ventilator including an outer sleeve, an inner sleeve closed at an outer end thereof and having at least one radially disposed opening, said inner sleeve being selectively moveable to either of two predetermined positions, means for maintaining said sleeve in a selected position, and engagement means disposed on an exposed surface of said inner sleeve.

This invention relates generally to the field of ventilating devices adapted to be installed upon planar surfaces, and more particularly to an improved selectively openable ventilator adapted for marine use.

t is among the principal objects of the present invention to provide a marine ventilator which may be conveniently installed in a suitable opening in the deck of a small boat.

Another object of the invention lies in the provision of an improved marine ventilator which may be conveniently opened and closed manually, and which is substantially water impermeable when in closed condition.

Yet another object of the invention lies in the provision of an improved marine ventilator which may be unusually durable, and including minimum of relatively moving parts, whereby the same may have a correspondingly long useful life.

A further object of the invention lies in the provision of an improved ventilating device possessed of the above advantages, in which the cost of fabrication may be of a reasonably low order, thereby permitting consequent wide sale, distribution and use.

A feature of the disclosed embodiment lies in the ease with which the same may be installed in the deck of a vessel.

Another feature of the invention lies in the unusually attractive appearance of the exposed portions of the device.

Still another feature of the invention lies in the provision of means for preventing the inflow of water on the deck of a vessel when the device is in opened condition.

These objects and features, as well as other incidental ends and advantages, will more fully appear in the progress of the following disclosure, and be pointed out in the appended claims.

In the drawing, to which reference will be made in the specification, similar reference characters have been employed to designate corresponding parts throughout the several views.

FIGURE 1 is a fragmentary view in perspective showing a first embodiment of the invention in installed condition upon the deck of a boat.

FIGURE 2 is an enlarged side elevational View of the first embodiment, showing the same in relatively closed condition.

FIGURE 3 is a top plan view thereof, as might be seen from the upper portion of FIGURE 2.

FIGURE 4 is a bottom plan view thereof, as might be seen from the lower portion of FIGURE 2.

FIGURE 5 is a longitudinal central sectional view as seen from the plane 5--5 in FIGURE 2.

FIGURE 6 is a longitudinal central sectional View, corresponding to that seen in FIGURE 5, but showing a second embodiment of the invention.

Referring now to the first embodiment of the invention, the device, generally indicated by reference character 10, is illustrated in FIGURE 1 in installed condition upon the deck 9 of a small boat, installation being accomplished by drilling a hole (not shown) through the deck to communicate with a hold disposed therebeneath. The device comprises broadly: abase element 11 and an extendable element 12.

The base element 11 is preferably formed from brass, bronze, or other material well adapted to withstand rust and corrosion, and may be suitably plated, as is well known in the art. It includes a mounting flange 15 bounded by an upper surface 16, a lower surface 17, an inner peripheral edge 18 and an outer peripheral edge 19. To facilitate the mounting of the flange 15 upon the surface of the deck 9, a plurality of counter-sunk screws 20 communicating between the surfaces 16 and 17 are preferably provided.

Depending from the lower surface 17 of the flange 15 is a cylindrical member 21 bounded by an outer surface 22, an inner surface 23, a lower edge surface 24 and an upper surface 25 which meets the lower surface 17 in a circular edge 26 to form a recess 27. The inner surface 23 includes an arcuate groove 28 bounded by side surfaces 29 and 30 and a lower surface 31. The lower edge surface 24 is modified to form a chamfered surface 32 to facilitate engagement with detent means to be described hereinbelow.

The extendable element 12 is also formed of a corrosion-resistant material, and includes a cap member 35, a sleeve member 36 and position-retaining means 37.

The cap member 35 includes an upper flange portion 38 and a cylindrical portion 39. The flange portion 38 is bounded by an upper surface 40, an arcuate edge surface 41 and a lower flange surface 42. The cylindrical portion 39 includes a stepped cylindrical surface 43 and a lower planar surface 44. Extending inwardly from the upper surface 40 is an elongated recess 45 providing access to a transverse rod 46 which may be manually engaged, or by means of a tool (not shown) to permit the extendable element 12 to be pulled upwardly to the position shown in FIGURE 1 from the position shown in FIGURE 5. Positioned within recesses 47 are springs 48 which bear against ball detents 48 selectively engageable with the above described arcuate groove 28, said detents forming a part of the retaining means 37.

The sleeve member 36 is bounded by an upper edge surface 52, an inner surface 53, an outer surface 54, and a lower edge surface 55. Upper orifices 56 provide for penetration by the ball detents 49, and similar lower orifices 57 provide for the passage of ball detents 58 of similar construction. Communicating between the inner and outer surfaces 53 and 54 is an opening 59 protected by a screen 60. As best seen in FIGURE 1, it will be observed that the lower edge of the opening 59 is disposed above the upper surface 16 of the mounting flange 15, so that any small amount of water which may be disposed upon the deck 9 will not enter the opening with the normal rocking of the boat. Extending outwardly from the surface 54 adjacent the lower edge surface 55 are a plurality of stop means 61 which may be in the form of small screws.

When the top member 53 has been depressed to the position shown in FIGURE 5, it lies flush with the mounting flange 15, and thus presents the neat appearance shown in FIGURE 3. Upon engagement of the rod 46, and the exertion of an upward force thereupon, the ball detents 49 are dislodged from engagement within the groove 28, permitting the extendable element 12 3 to be raised to the position shown in FIGURE 1, wherein further motion is prevented by engagement of the stop means 61 with the lower edge surface 24, at which point the detents 58 engage the groove 28.

Turning now to the second embodiment of the invention, generally indicated by reference character 64, parts corresponding to those of the first embodiment have been designated by similar reference characters with the additional prefix 1.

The second embodiment differs from the first embodiment in the provision of a slot 65 extending into the upper surface 140 of the flange portion 138 which may be engaged by a suitable tool such as a screwdriver. The detents 49 and 58 are rep-laced by shallow upper threads 68 and lower threads 69 selectively engageable with corresponding threads 70 on the inner surface of the cylindrical member 121. If desired, there may also be provided a groove 71 accommodating O-ring means 72 which forms an efiective hydraulic and hermetic seal when the upper threads 68 are tightened. The second embodiment is particularly useful where the device is installed in locations which are likely to transmit water therethrough under predetermined conditions. The second embodiment is placed in open condition by rotating the extendable element until the upper threads 68 are disengaged, following which the element is listed to a point where the lower threads 69 may be engaged, and rotated to a position of full engagement with the threads 70. Excessive rotation in this position is prevented by forming a portion of the threads 69 in misaligned condition, or by distorting the same, as is well known in the art.

I 'wish it to be understood that I do not consider the invention limited to the precise details of structure shown and set forth in this specification, for obvious modifications will occur to those skilled in the art to which the invention pertains;

I claim:

1. A ventilator comprising: a base element and an extendable element; said base element including a mounting flange having a substantially centrally disposed opening and a hollow cylindrical member having a bore communicating with said opening; said extendable element including a hollow sleeve member having an outer surface, an inner surface, and first and second ends defining a bore having a principal axis, a flange member closing one end of said bore, there being an opening in said sleeve member extending between said inner and outer surfaces and intermediate said ends; said extendable element being at least partially disposed wit-bin said cylindrical member, means for selectively fixing the relative position of said extendable element relative to said cylindrical member in either of two predetermined positions, and engagement means on an outer surface of said flange member for moving said extendable element between said first and second positions. a

2. Structure in accordance with claim 1 in which said last-mentioned means includes a plurality of spring pressed ball detents projecting outwardly of the outer surface of said sleeve member and manually engageable means recessed in an outer surf-ace of said flange memher.

3. Structure in accordance with claim 1 in which said last-mentioned means includes first and second threads on the outer surface of said sleeve member at opposite ends thereof substantially at saidfirst and second ends, a corresponding thread on an inner surface of said cylindrical member and tool engaging means recessed in an outer surface of said flange member.

References Cited UNITED STATES PATENTS 778,204 12/1904 Porter l1421l 2,489,011 11/1949 Dahlin 9864 X FOREIGN PATENTS 1,121,346 4/1956 France.

EDWARD J. MICHAEL, Primary Examiner.

ROBERT A. OLEARY, Examiner.

M. A. ANTONAKAS, Assistant Examiner. 

